how to add button in tkinter

1from tkinter import *
2window = Tk()
3
4def got_clicked():
5  print("I got clicked!")
6
7my_button = Button(text="Click me", command=got_clicked)
8my_button.pack()
9
10window.mainloop()

1import tkinter as tk #We will use tkinter
2
3font = 'Helvetica' #This is the font that we will use
4
5def cmd(): #This is the command for our button
6  label = tk.Label(master,text="Hi to everyone",font=(font,16)) #We'll create
7  																#a label
8  label.grid(row=1,column=0,sticky='w') #This is the 'grid'
9
10class main: #Our main class
11  def __init__(self,master):
12    master.title('Simple Interface') #The title of our interface
13    master.geometry('500x500+0+0') #Position and Size of master
14    button = tk.Button(master,text='Ok',command=cmd) #Creating the button
15    button.grid(row=0,column=0,sticky='w') #Grid of the button
16
17if __name__ == '__main__':
18  master = tk.Tk() #Now we're creating the window
19  main = main(master)
20  master.mainloop #Mainloop of master (the window)

1import tkinter as tk
2    
3
4def write_slogan():
5    print("Tkinter is easy to use!")
6
7root = tk.Tk()
8frame = tk.Frame(root)
9frame.pack()
10
11button = tk.Button(frame, 
12                   text="QUIT", 
13                   fg="red",
14                   command=quit)
15button.pack(side=tk.LEFT)
16slogan = tk.Button(frame,
17                   text="Hello",
18                   command=write_slogan)
19slogan.pack(side=tk.LEFT)
20
21root.mainloop()
22

1from tkinter import *
2
3wow = Tk()
4
5def ree(hi):
6  print(hi)
7  
8w = Button ( master=wow, command=ree('hi'), text="hi" )
9
10Output:
11  Tkinter:
12    ______
13   [  hi  ] <--- Button
14    ------
15  
16  Shell:
17    hi <--- on button pressed

1from tkinter import *
2
3
4master = Tk()
5
6#program you want the button to execute
7def closewindow():
8    exit()
9
10#set up button
11button = Button(master, text="close window", command=closewindow)
12
13button.pack()
14
15mainloop()
16

1import Tkinter
2import tkMessageBox
3
4top = Tkinter.Tk()
5
6def helloCallBack():
7   tkMessageBox.showinfo( "Hello Python", "Hello World")
8
9B = Tkinter.Button(top, text ="Hello", command = helloCallBack)
10
11B.pack()
12top.mainloop()